* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #0a0a0a;
    color: #e2e0e0;
    overflow-x: hidden;
}

header {
    position: fixed;
    width: 100%;
    padding: 1.5rem 3.0rem;
    background: linear-gradient(90deg, rgba(60, 45, 45, 0.95) 100%, rgba(10,10,10,0) 0%);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: 0.2em;
    background: linear-gradient(135deg, #ff4757 0%, #ff6348 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none; 
}

.header-logo {
    width: 35px;
    height: 35px;
    margin-right: 12px;
}

nav ul {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    list-style: none;
    margin: 0;
    padding: 0;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    transition: color 0.3s;
    text-transform: uppercase;
}

nav a:hover {
    color: #ff4757;
}

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: radial-gradient(ellipse at center, #000000 0%, #0a0a0a 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(45deg, transparent 48%, #ff4757 49%, #ff4757 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, #ff4757 49%, #ff4757 51%, transparent 52%);
    background-size: 100px 100px;
    opacity: 0.03;
    animation: bgMove 20s linear infinite;
}

@keyframes bgMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

.hero-content {
    text-align: center;
    z-index: 10;
    max-width: 1200px;
    padding: 2rem;
}

.hero h1 {
    font-size: 6rem;
    font-weight: 900;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #ff4757 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero .tagline {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    font-weight: 300;
    letter-spacing: 0.15em;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.btn-primary, .btn-secondary {
    padding: 1.2rem 3rem;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    align-items: center;
}

.btn-primary {
    background: linear-gradient(135deg, #ff4757 0%, #ff6348 100%);
    color: #ffffff;
    box-shadow: 0 10px 30px rgba(255, 71, 87, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 71, 87, 0.5);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-secondary:hover {
    background: #ffffff;
    color: #0a0a0a;
}

/* Stats Section: Removed .stats-grid and .stat-card styles as they are unused */
.stats-section {
    padding: 6rem 3rem;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}


.about-section {
    padding: 6rem 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.about-section h2 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 2rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.about-section p {
    font-size: 1.2rem;
    line-height: 2;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.features-section {
    padding: 6rem 3rem;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}

.features-section h2 {
    font-size: 3.5rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 4rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    padding: 3rem 2rem;
    background: rgba(255, 255, 255, 0.03);
    border-left: 4px solid #ff4757;
    transition: all 0.3s;
}

.feature-card:hover {
    background: rgba(255, 71, 87, 0.1);
    transform: translateX(10px);
}

.feature-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-transform: uppercase;
}

.feature-card p {
    opacity: 0.8;
    line-height: 1.8;
}

.cta-section {
    padding: 8rem 3rem;
    text-align: center;
    background: radial-gradient(ellipse at center, #ff4757 0%, #0a0a0a 70%);
}

.cta-section h2 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.cta-section p {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

/* Footer Style */
footer {
    padding: 3rem 1rem;
    text-align: center;
    background: #0a0a0a;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    color: #ffffff;
}

.footer-message {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.social-icon {
    color: #ffffff;
    transition: color 0.3s;
    text-decoration: none;
}

.social-icon:hover {
    color: #ff4757;
}

.copyright-text {
    font-size: 0.8rem;
    opacity: 0.6;
}

/* Schedule Section Styles */
/* .stats-section#schedule は冗長なので削除し、.schedule-sectionとして使用 */
.schedule-section {
    padding: 6rem 3rem;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
}
.schedule-container {
    max-width: 1200px;
    margin: 0 auto;
}

.schedule-sub-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: 0.05em;
    color: #ffffff;
}
/* 4-5月のスケジュール見出しにも適用 */
.schedule-container > p.schedule-sub-title {
    font-size: 1.8rem;
    margin-bottom: 4rem;
    opacity: 0.8;
}


.schedule-sub-title-4month,
.schedule-sub-title-5month {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: 0.05em;
    color: #fdd700;
}

.schedule-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

/* Schedule Card Base */
.schedule-card {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 5px;
    transition: all 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.schedule-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

/* Primary Cards (Accent BG) */
.schedule-card.is-primary {
    background: rgba(255, 71, 87, 0.1);
    border-left: 5px solid transparent;
}
.schedule-card.is-primary:hover {
    background: rgba(255, 71, 87, 0.2);
    border-left-color: #ff4757;
}


/* Light Cards (Default BG) */
.schedule-card.is-light {
    background: rgba(255, 255, 255, 0.05); 
    border-left: 5px solid transparent;
}
.schedule-card.is-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-left-color: #ff4757;
}

/* Warning Card (Deadline) */
.schedule-card.is-warning {
    background-color: #ff4757;
    color: #0a0a0a !important;
    border: 2px solid #ffffff;
}
.schedule-card.is-warning .card-title,
.schedule-card.is-warning .card-subtitle,
.schedule-card.is-warning .card-desc {
    color: #ffffff !important; 
}
.schedule-card.is-warning .schedule-tag.is-white {
    background-color: #000000;
    color: #ff4757;
}

/* Border Only Card (Weekly Practice) */
.schedule-card.is-border-only {
    background: transparent;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    text-align: center;
}
.schedule-card.is-border-only:hover {
    transform: none;
    background: rgba(255, 71, 87, 0.03);
}

/* Card Content Styling */
.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    color: #ffffff;
}
.card-title-small {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    color: #ffffff;
}
.card-subtitle {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 0.5rem;
}
.card-subtitle-small {
    font-size: 0.8rem;
    opacity: 0.7;
}
.card-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-top: 0.8rem;
    opacity: 0.8;
}

/* Tags Styling */
.schedule-tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-right: 0.5rem;
    line-height: 1;
}

.schedule-tag.is-warning { background-color: #ff9800; color: #0a0a0a; }
.schedule-tag.is-info { background-color: #3498db; color: #ffffff; }
.schedule-tag.is-success { background-color: #2ecc71; color: #ffffff; }
.schedule-tag.is-danger { background-color: #e74c3c; color: #ffffff; }
.schedule-tag.is-accent { background-color: #ff4757; color: #ffffff; }
.schedule-tag.is-white { background-color: #ffffff; color: #ff4757; }

/* Footer Note */
.schedule-footer {
    text-align: center;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px dashed rgba(255, 255, 255, 0.1);
}

.schedule-footer .footer-note {
    font-size: 1.2rem;
    opacity: 0.7;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Alumni Section Styles */
.alumni-section {
    padding: 6rem 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.alumni-section .section-title {
    font-size: 3.5rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 4rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.alumni-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.alumni-card {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.alumni-card:hover {
    background: rgba(255, 71, 87, 0.1);
    border-color: #ff4757;
    transform: translateY(-5px);
}

.alumni-photo {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin: 0 auto 1.5rem;
    border: 4px solid #ff4757;
    display: block;
}

.alumni-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    color: #ff4757;
}

.alumni-quote {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 1rem;
    opacity: 0.9;
    font-style: italic;
}

.alumni-text {
    font-size: 0.95rem;
    line-height: 1.7;
    opacity: 0.8;
}
    
/* Media Queries */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }

    .hero .tagline {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    nav ul {
        display: none;
    }

    h2 {
        font-size: 2.5rem !important;
    }

    .alumni-section .section-title {
        font-size: 2.5rem !important;
    }

    header {
        padding: 1rem;
    }

    /* Schedule Section Adjustments */
    .schedule-grid {
        grid-template-columns: 1fr;
    }
    .schedule-sub-title {
        font-size: 2rem;
    }
    .schedule-sub-title-4month,
    .schedule-sub-title-5month {
        font-size: 1.5rem;
    }

    /* Hamburger Button Styles */
    .hamburger {
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        width: 30px;
        height: 25px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0;
        z-index: 1001;
        margin-left: auto;
    }

    .hamburger span {
        display: block;
        width: 100%;
        height: 3px;
        background: #ffffff;
        border-radius: 3px;
        transition: all 0.3s ease-in-out;
        
    }

    /* Hamburger to X Animation */
    .hamburger.is-active span:nth-child(1) {
        transform: translateY(11px) rotate(45deg);
    }

    .hamburger.is-active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.is-active span:nth-child(3) {
        transform: translateY(-11px) rotate(-45deg);
    }
    
    /* Open Menu List Styles */
    #menu-list.is-open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: #0a0a0a;
        padding: 100px 3rem 3rem;
        gap: 2rem;
        align-items: center;
        justify-content: flex-start;
        z-index: 999;
        list-style: none;
    }

    #menu-list.is-open li {
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 1rem;
    }

    #menu-list.is-open a {
        font-size: 1.5rem;
    }
    
    .header-logo {
        width: 30px;
        height: 30px;
        margin-right: 10px;
    }
}

@media (min-width: 769px) {
    .hamburger {
        display: none;
    }
}